Forge



4 Sheets-Sheet 1 H. 1'. GERDES FORGE Filed June 14, 1927 June 12. 1928.

INVENTOR Hemgq Z G'erd sz 5% I I AT'TORNEY v FORGE Filed June 14, 1927 4-Sheets-$heet INVENTO'R ATTORNEY H. T. GERDES June 12. 1928.

FORGE Filed June 14, 1927 4 Sheets-Sheet 3 INVENTOR Henry T 69rd 5 AT TORNEY Patented June 12, 1928.

UNITED STATES PATENT OFFICE.

HENRY T. GERDES, OF LEBANON, PENNSYLVANIA, ASSIGNOR T I-IAUOK MANUFAC- TUBING COMPANY OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

FORGE.

Application filed June 14, 1927. Serial 110,198,745.

The invention relates to forges, fired with gaseous fuels such as gas or oil and preferably the latter. It relates more especially to a portable type of forge and which may be self-contained, carrying with it a suitable storage tank for the fuel employed as well as means for affording air under pressure to atomize and mix the fuel and provide a blast of combustible mixture thereof.

The invention has for its object a device of this character which will afford an ciiicient heating chamber having an opening or mouth conveniently located for the insertion and removal of the objects or material to be heated therein, for example, as rivets.

In carrying out the invention, a blast of the fuel mixed with the proper quantity of air is arranged to be directed into a specially constructed heating chamber so designed as to further direct the now ignited blast clownwardly upon the floor of the chamber and to cause it to be more or less retained there over in eddies so that its velocity will be largely spent when it reaches the space immediately above the filling opening or mouth of the forge. The working space in front of the same will then remain comparatively cool and accessible to the operator and thereby facilitate removal of the heated objects in that the hand of an operator is able to approach very closely to the said opening without danger of burning. This effect is further enhanced by the deflection imparted to the outgoing stream of spent gases causing the same to assume an upward direction and away from the front wall of the mouth portion of the heating chamber of the forge.

A further feature of the invention resides in a novel means for effecting the supply of combustible fuel for use in the furnace.

The nature of the invention, however, will best be understood when described in connection with the accompanying drawings, in which:

Fig. 1 is a front elevation of the novel forge; and Fig. 2 is a side elevation thereof.

Fig. 3 is a part elevation of the opposite side of the forge and part vertical section of the heating chamber thereof.

Fig. at is a horizontal section through the heating chamber of the forge, taken on the line 1- 1, Fig. 3, and looking in the direction of the arrows.

Fig. 5 is a part vertical section of an air motor employed to operate the fuel pump as well as to supply at suitable pressure the air for atomizing and mixing the fuel.

Referring to the drawings, designates a suitable supporting frame upon which the heating chamber and various related apparatus is supportechas well as the fuel tank 11 which may contain, for example, a supplv of oil to be filled therein, when needed, through a suitable filling chamber 12 and fill pipe 13. A fuel supply pipe 1 1 dips into the tank 11, extending substantially to the bottom thereof; and the same is connected with a pump 15 for supplyingthe fuel under the desired pressure.

This pump is of any well-knowu rotary type; and is actuated and operated in a novel manner as by being coupled, geared or beltconnected to the shaft 16 of an air motor 17. The latter, reference'being had to Fig. 5, may be of any well-kuown or special type and is preferably of the rotary impeller type as shown. Air for actuating said air motor 1r may be obtained from'any suitable source as through the air supply pipe 18 having the control valve 19 included therein. hen the air is thus applied in opening the said valve, the air motor 17 will be rotated at comparatively high velocity and will correspondingly rotate pump 15 to supply the fuel to the burner vmen'lber 20 through the connection 21. ldoreover, the exhaust from said motor 17 is directed through an outlet connection 22' communicating with said burner to atomize the fuel supplied thereto, said air motor beingdesigned in such a main ner that the exhaust therefrom will be under su'liicient pressure, say one-half pound to two pounds, to'insure proper atomization of the fuel.

Burner 20 discharges through its nozzle 23 into the forge portion of the apparatus, which comprises a utietal-bound casing of refractory material 25 having a tapered opening or throat 26 in the bottom thereof and substantially midway of the sides, said opening receiving the blast of combustible mixture from the nozzle. While in the wall opposite said inlet and substantially midway of the top and bottom of the casing the lat ter is provided with a flaring mouth 27 for receiving the articles to be heated as,

for example. the rivets 2S, and constituting also an outletfor the spent gases or products of combustion.

lmmed'atcly adjacent; the throat or inlet 2U is a batllc or wall 29. prel'erably inclined inwardly and more or continuing the taper oi the said throat. This wall or balll cxteml; across the rail of the casing and projects a short distance upwardly into the space constituting the heating chamber 3 l ol? the said casing or forge portion, said ballle preventing also articles irom reaching the inlet portions.

The root or upper portion ot said chan'iber. tui'thermore. is arched or curved substantially to a semi-cylimlrical 'lorm, as indicated at ill. a wall 32 extending downwardly there from into the heating chamliaato cooperate with the ballle 25) in imparting a rotary or whirling motion to the incoming blast ot tlame and directing the same to the bottom or hearth 33, as indicated by the arrows. Heating chamber 30 is constructed to he 0t suital'ile dimensions and is adapted to retain the articles to be heat ed on the said hearth between said ballle Q9 and a wall Ill at the, front of the heating chamber and preterably inwardly inclined toward battle it), said wall together with the downwardly di rected \all 232 determining the mouth or outlet Q7.

The blast of fuel and flame thus directed over the hearth 3 5 is guided and more or less reversed upon itself by the inwardly inclined wall to again pass over the said articles and its energy is thus expended to a. certain extent, reducing greatly the usual roar attendant upon the operation of this type of apparatus and insuring that; in leaving the mouth 52? of the forgo the ga will have but a minimun'i velocity so that. the said mouth may be approached very closely in manipulating the article to be heated. The Face 35 ot the downwardly projecting wall 32 serws. also, and in addition to the root 31, to reflect the heat downwardly upon the articles to further assist in bringing them to the proper tcmperaturi as rapidly as possible; and. ill desired, a screen or guard member 86, carried by bracket. arms 37 adjustahly attached to the sides ot the, casing as by the thumb nuts 35 and 3!), serves to reflect back l'urther portions of the heat. as well as to screen aymreciably an operator agi'ainstthe direct radiation 'l'rom the interior ol the torge. Sullieient space, however, is left upon either side oil? the said screen to admit; of ready manipulation of the articles to be heated.

In this manner a very simple. eli'ective and economically operated forge provided, the heat developed by the comliiustion of the fuel being, confined to a large extent to the vicinity of the heartlrtlil; and the said forge operates with a minimum of noise and also admits ot manipulation of the material to be heated with a minimum of discomlort to the operator.

I claim:

1. A l'orge comprising a casing ol' rt-l'ractory material allordinu' a beating chamlwr having an inlet taper d throat or op ning through the bottom subs antially midway ol' the sides tbereot and a mouth opposite said throat to permit manipulation of material within the heating chamber. and a battl adjacent the outlet ol' said throat; continuing the taper ol the same and extending across the rear oi the, casing; and upwardly into the heating chamljier thercol'. the said (lmtllbct being provided with a relic-cling surl'ace bctween said battle and mouth.

2. A forge comprising a. casino ol retract'ory material all'ording a heating chamber having an inlet, throat or opening" through the bottom thereol' and a. mouth oppta'ile said throat to permit. manipulation ol matw rial within the heating chamber, and a ballle adjacent the outlet o I. said throat. extending across the rear ot the casing and upwardlv into the heating chamber thereof and inclined. inwardly, the said luaatine chamhcr being provided with a reflecting surlace lie-- tween th said. battle and the mouth ot the heating chamber.

25. A lore-e conu irisintg a casing of retraotory material allording: a heating chamber having an inlet throat or opcnn r through the bottom and a mouth oppositt .aid throat to permit manipulation ol material within the heating chamber. and a battle :uljaccnt. the outlet; of said throat and exlmiding across the. rear oil." the casing and upwardly into the heating chamber tlnxreot' said heating chamber being provided with a reflecting surface between. the said battle and the mouth of the heating chamber and including a wall member extending downwardly l'rom the root thereof with its under lace all'ordin; a reflecting surlace located over the bottom of sa id heating chamber.

4:. A torg'e comprising a easin; ol retractiory imit'erial UllUlfdlJijJ a heating llltlll'llltfl' having an inlet: throat or opening through the bottom thereof and a mouth opposite said throat to permit; manipulation ol. material within the hcatinc chamber a balllc adjacent the outlet at said throat. extending ilClt the rear oi. the casing and upwardly into the heating chamber thereot' and inclined inwardly. the said heating chamber beingprovided with a reflecting surt'acc be tween the said ballle and the mouth of tho heating chamber, the rall adjacent to the said mouth extendin; upwardly lrom the bottom of the heating chamber and directed inwardly.

A 'l'orge comraisin; a casing; ol rel'rao tory material aliording a heating chamber having an inlet throat or opening through ltn.

llti

lfitl the bottom thereof and a mouth opposite said throat to permit manipulation of material within the heating chamber, a bafile adjacent the outlet of said throat, extending 5 across the rear of the casing and upwardly into the heating chamber thereof and inclined inwardly, the said heating chamber being provided with a reflecting surface between the said bafile and the mouth of the 10 heating chamber, the wall adjacent to the said mouth extending upwardly from the bottom of the heating chamber and directed inwardly and said reflecting surface including a wall member extending downwardly from the roof of the heating chamber be tween said battle and inwardly inclined front wall.

In testimony whereof I aflix my signature.

HENRY 'r. GERDES. 

